WOlf,
I use the OHM F5 series 3 speakers in my fairly large L shaped room.
The OHMs are essentially omnidirectional and sound similar form most any location in front of them. They are located in teh bottom of the L, 5 feet or more from closest walls. I listen from anywhere within the length of the L in front of them. The differences are in line with those one would hear from different locations in the same room were there a live act performing up front. The main thing that changes is perspective and width and depth of soundstage, not tonality. Sometimes I sit in the front row, either dead center or off to the left or right outside the closest speaker, sometimes I stand all the way in the rear just to soak it all in. My preferred listening position is about 8-10 feet in front of teh right speaker. That's more or less like sitting about 1/3 of the way back in your favorite jazzclub. My room is closest to layout and sound to the Village Vanguard in NYC of all the places I have been that anyone might have heard of.
No butler or tapestries, and my wife and daughter would have my head if I smoked a cuban cigar down there, so can't comment on that one. I do like to play it loud from time to time but also trying to preserve my 50+ year old hearing still. :^)